This study was conducted at the field of the research station Sianow of General Commission for Scientific Agricultural Research at Lattakia, to evaluate the susceptibility of 6 strains of maize ( IL.257-09(P1), IL.298-09(P2 ) , IL.286-09 (P3 ), IL.255-09( P4), IL.262-09 (P5), IL.228-09 (P6 )), against the natural infestation by large corn stem borer , Sesamia cretica Led. They were Compared with control (Ghouta 82).because it is the most growing variety in Syria.